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Finding the Fourth Proportional to 26,707.36, 40,062.08 and 7,987.68

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Solution

The fourth proportional to 26,707.36, 40,062.08 and 7,987.68 is: 11,981.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,707.36 : 40,062.08 = 7,987.68 : x
  2. Step 2: Convert to fraction form
    26,707.36/40,062.08 = 7,987.68/x
  3. Step 3: Cross multiply
    26,707.36x = 40,062.08 × 7,987.68
  4. Step 4: Simplify right side
    26,707.36x = 320,003,075.17
  5. Step 5: Solve for x
    x = 320,003,075.17/26,707.36
  6. Step 6: Final answer
    x = 11,981.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.